The easy to clean non absorbent soft seat encourages the training process through optimized ergonomics & proper positioning. The potty chair promotes optimal pelvic floor orientation. The height from the ground supports knees and relieves pressure on thighs when child is learning. The potty seat has a wide, stable base. Crevice free design makes for a quicker, more hygienic clean up. Includes a one handed bowl removal. The easy to remove trainer seat reducer can be used with or without hygienic foam topper. The right height step stool provides ample surface area and sturdiness. (shipping weight 3 lbs)